Sorry I don't have full info on this, but will give you what I have been told. After the first of the year GM will be starting a "Goodwrench Credit Card" program (atleast in the US). It will be branded with the dealer name, so dealer must sign up to be in the program. One of the features will be special customer promotions, such as "90 days, same as cash" and possible even a "6 months, same as cash". May give the Vibe Supercharger crowd some ideas and options to fit the upgrade into the budget. Watch your dealer for details, or even tell them you would be interested. Good luck and Happy Holidays.